The Heartfelt Strap (Part One) As Conan and the Detective Boys are leaving a soccer game, Conan asks Haibara to give him some APTX 4869 antidote so he can go on the school trip, but she refuses because of how many times she's had to bail him out before when he's run into trouble. While on the train, the train makes a sudden stop making Haibara lose her phone strap and Genta drop his Detective Boys badge. Conan and the Detective Boys enlist Amuro to help them search for Haibara's strap. Mitsuhiko's phone accidentally started filming when the train stopped, and they are able to use the footage to see a father and son who had picked up the strap.